printing network status to the console

[tony seth]

I've posted about this before, but didn't get what I was looking for, 
I'll try to explain it...
When I played with a debian install, I found out by accident, that when 
my network cable came unplugged, some output presumably from dmesg got 
printed to the console, and speakup informed me of the unplugged cable, 
which, when I plugged it back in, caused output to the console 
informing me that the link was up and at full duplex as if I'd been 
looking at that piece of info from dmesg.  I'd love to know how that 
happens, and how I can get that kind of behavior in slackware.  any 
help please... I read the man page on dmesg, and may have understood 
that the level of verbosity can be controlled, but don't know how 
exactly to do it.  Thanks much.
Cheereo!

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